JP2004197998A

JP2004197998A - Heat medium supply type heater

Info

Publication number: JP2004197998A
Application number: JP2002364975A
Authority: JP
Inventors: Shoji Yamaguchi; 尚二山口; Takayuki Fukagi; 隆行深木; Katsuhiko Nishio; 雄彦西尾
Original assignee: Osaka Gas Co Ltd
Current assignee: Osaka Gas Co Ltd
Priority date: 2002-12-17
Filing date: 2002-12-17
Publication date: 2004-07-15
Anticipated expiration: 2022-12-17
Also published as: JP3894884B2

Abstract

<P>PROBLEM TO BE SOLVED: To accurately heat to a target temperature inside a space to be heated, while coping with a request to raise/lower the temperature of the heat medium to be supplied. <P>SOLUTION: This heat medium supply type heater is provided with a switching means 4 for continuing/cutting supply of the heat medium by opening/closing a heat medium circulation passage 1, and a control means 5 for controlling operation of a heat source means 3 and the opening/closing operation of the switching means 4. The control means 5 is structured to carry out the opening/closing control by obtaining a target opening/closing ratio about opening time and closing time in response to a temperature difference between the real temperature and a target set temperature inside the space to be heated, and periodically repeating the opening/closing operation of the switching means 4 so that the opening/closing ratio in single cycle becomes the obtained target opening/closing ratio. The heat source means 3 is structured freely to select the temperature of the medium to be supplied to a heating terminal 2. The control means 5 is structured to obtain the target opening/closing ratio so that the target opening/closing ratio in the case of the same temperature difference becomes a different value in response to the temperature of the medium to be supplied when performing the opening/closing control. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、加熱した熱媒を熱媒循環路を通して暖房端末に供給する熱源手段と、前記熱媒循環路を開閉して熱媒の供給を断続する開閉手段と、前記熱源手段の運転および前記開閉手段の開閉作動を制御する制御手段とが設けられ、
前記制御手段は、暖房対象空間内の温度と目標設定温度との温度差に応じて、前記開閉手段を開状態に維持する開時間と前記開閉手段を閉状態に維持する閉時間との目標開閉比率を求めて、単一周期における開閉比率が求めた目標開閉比率になるように調整する形態で、前記開閉手段の開閉作動を周期的に繰り返し行う開閉制御処理を実行するように構成されている熱媒供給式の暖房設備に関する。
【０００２】
【従来の技術】
上記のような熱媒供給式の暖房設備は、制御手段が、暖房対象空間内の室温や床温と目標設定温度との温度差に応じて目標開閉比率を求めて、単一周期における開閉比率が求めた目標開閉比率になるように調整する形態で、開閉手段の開閉作動を周期的に繰り返し行う開閉制御処理を実行することにより、暖房対象空間内の室温や床温が目標設定温度になるように暖房対象空間を暖房するものである。
【０００３】
従来では、例えば、６０℃などの一定の熱媒供給温度の熱媒を熱源手段から暖房端末に供給し、例えば、単一周期を２０分間として、一定の熱媒供給温度に対応する状態で、開時間と閉時間との開閉比率が、暖房対象空間内の温度と目標設定温度との温度差が小さくなるように予め定められており、制御手段が、開閉制御処理において、一定の熱媒供給温度に対応して予め定められた開閉比率から、暖房対象空間内の温度と目標設定温度との温度差に応じて目標開閉比率を求めるように構成されていた（例えば、特許文献１参照。）。
【０００４】
【特許文献１】
特開２０００−１２１０７８号公報
【０００５】
【発明が解決しようとする課題】
上記従来の熱媒供給式の暖房設備では、６０℃などの一定の熱媒供給温度の熱媒を熱源手段から暖房端末に供給するようにしているが、暖房使用形態や暖房端末の敷設状態によって、熱源手段から暖房端末に供給する熱媒の熱媒供給温度を高低に切り換えることが求められている。
すなわち、熱源手段から暖房端末に供給する熱媒の熱媒供給温度を低くすることにより、例えば、恒常的に床暖房装置を使用する場合や部屋全面に床暖房装置を敷設する場合には、熱源手段での加熱量を減少させて、省エネルギー化を図ることができることから、熱媒供給温度を低くすることが求められる。
また、熱源手段から暖房端末に供給する熱媒の熱媒供給温度を高くすることにより、例えば、断続的に床暖房装置を使用する場合や部分的に床暖房装置を敷設する場合には、運転の開始から短時間で暖房対象空間を暖房することができることから、熱媒供給温度を高くすることが求められる。
【０００６】
そして、上述の要望に応えるために、熱源手段を、暖房端末に供給する熱媒の熱媒供給温度を切換自在に構成し、暖房使用形態や暖房端末の敷設状態に応じて熱媒供給温度の熱媒を熱源手段から暖房端末に供給することが考えられている。しかしながら、上記従来の熱媒供給式の暖房設備では、例えば、６０℃などの一定の熱媒供給温度に対応して予め定められた開閉比率から、暖房対象空間内の温度と目標設定温度との温度差に応じて目標開閉比率を求めるようにしているので、実際に供給される熱媒供給温度と目標開閉比率を求めるときの基準となる熱媒供給温度とが異なり、暖房対象空間内の温度を目標設定温度に暖房できない虞がある。
【０００７】
説明を加えると、熱媒供給温度を６０℃よりも低く切り換えたときには、熱媒供給温度が６０℃よりも低くなっているにもかかわらず、熱媒供給温度が６０℃であるときの目標開閉比率が求められることになるので、実際に供給される熱媒供給温度が目標開閉比率を求めるときの基準となる熱媒供給温度よりも低くなり、暖房対象空間内の温度が目標設定温度よりも低い状態に暖房されることになる。
逆に、熱媒供給温度を６０℃よりも高く切り換えたときには、熱媒供給温度が６０℃よりも高くなっているにもかかわらず、熱媒供給温度が６０℃であるときの目標開閉比率が求められることになるので、実際に供給される熱媒供給温度が目標開閉比率を求めるときの基準となる熱媒供給温度よりも高くなり、暖房対象空間内の温度が目標設定温度よりも高い状態に暖房されることになる。
【０００８】
本発明は、かかる点に着目してなされたものであり、その目的は、使用者の暖房使用形態や暖房端末の敷設状態に応じて熱媒供給温度を高低させたいという要望に応えながら、暖房対象空間内の温度を目標温度に的確に暖房することができる熱媒供給式の暖房設備を提供する点にある。
【０００９】
【課題を解決するための手段】
この目的を達成するために、請求項１に記載の発明によれば、加熱した熱媒を熱媒循環路を通して暖房端末に供給する熱源手段と、前記熱媒循環路を開閉して熱媒の供給を断続する開閉手段と、前記熱源手段の運転および前記開閉手段の開閉作動を制御する制御手段とが設けられ、
前記制御手段は、暖房対象空間内の温度と目標設定温度との温度差に応じて、前記開閉手段を開状態に維持する開時間と前記開閉手段を閉状態に維持する閉時間との目標開閉比率を求めて、単一周期における開閉比率が求めた目標開閉比率になるように調整する形態で、前記開閉手段の開閉作動を周期的に繰り返し行う開閉制御処理を実行するように構成されている熱媒供給式の暖房設備において、前記熱源手段が、前記暖房端末に供給する熱媒の熱媒供給温度を切換自在に構成され、前記制御手段は、前記開閉制御処理において、前記温度差が同じであるときの前記目標開閉比率が、前記熱媒供給温度に応じて異なる値となるように、前記目標開閉比率を求めるように構成されている。
【００１０】
すなわち、熱源手段が、暖房端末に供給する熱媒の熱媒供給温度を切換自在に構成されているので、その使用者の暖房使用形態や暖房端末の敷設状態に応じて熱媒供給温度を高低に切り換えることができることになる。
前記制御手段は、開閉制御処理において、暖房対象空間内の温度と目標設定温度との温度差が同じであるときの目標開閉比率が、高低に切り換えられる熱媒供給温度に応じて異なる値となるように、目標開閉比率を求めるので、制御手段は、開閉制御処理において、例えば、熱媒供給温度が低いほど、閉時間に対して開時間が長くなるように、高低に切り換えられる熱媒供給温度に対応する目標開閉比率を求めることができることになる。
【００１１】
そして、使用者の暖房使用形態や暖房端末の敷設状態に応じて熱媒供給温度を高低に切り換えることにより、制御手段は、上述のようにして、高低に切り換えられる熱媒供給温度に対応する目標開閉比率を求めることにより、実際に供給される熱媒供給温度と目標開閉比率を求めるときの基準となる熱媒供給温度とを対応させることができることになる。
したがって、制御手段は、高低に切り換えられる熱媒供給温度に対応する状態で開閉制御処理を実行することができることとなって、使用者の暖房使用形態や暖房端末の敷設状態に応じて熱媒供給温度を高低に切り換えても、暖房対象空間内の温度を目標温度に的確に暖房することができることになる。
【００１２】
以上のことから、使用者の暖房使用形態や暖房端末の敷設状態に応じて熱媒供給温度を高低に切り換えながら、その高低に切り換える熱媒供給温度に対応する状態で開閉制御処理を実行することができることによって、暖房対象空間内の温度を目標温度に的確に暖房することができる熱媒供給式の暖房設備を提供できるに至った。
【００１３】
請求項２に記載の発明によれば、前記制御手段は、前記開閉制御処理において、基準用の熱媒供給温度について、前記温度差に応じて定めた基準用開閉比率を、前記熱媒供給温度に応じて定めた補正用情報に基づいて調整して、前記目標開閉比率を求めるように構成されている。
【００１４】
すなわち、制御手段は、開閉制御処理において、定めた基準用開閉比率を、熱媒供給温度に応じて定めた補正用情報に基づいて調整して、目標開閉比率を求めるので、制御手段は、基準用開閉比率のみを取り扱うことにより、高低に切り換えられる熱媒供給温度についての目標開閉比率を求めることができることになる。
したがって、制御手段は、基準用開閉比率と補正用情報との情報を扱うだけで、目標開閉比率を求めることができるので、高低に切り換えられる熱媒供給温度についての目標開閉比率を求めるときに取り扱う情報量を小さくすることができることとなって、構成の簡素化を図ることができることになる。
【００１５】
請求項３に記載の発明によれば、前記制御手段は、前記開閉制御処理において、前記温度差が同じであるときの開閉比率が前記熱媒供給温度に応じて異なる値となるように定めた複数種の熱媒供給温度対応開閉比率のうちから、前記熱媒供給温度に対応する熱媒供給温度対応開閉比率を選択して、前記目標開閉比率を求めるように構成されている。
【００１６】
すなわち、制御手段は、開閉制御処理において、定めた複数種の熱媒供給温度対応開閉比率のうちから、熱媒供給温度に対応する熱媒供給温度対応開閉比率を選択して、目標開閉比率を求めるので、制御手段は、複数種の熱媒供給温度対応開閉比率のうちから、ひとつの熱媒供給温度対応開閉比率を選択するという容易な制御構成により、高低に切り換えられる熱媒供給温度についての目標開閉比率を求めることができることになる。
したがって、目標開閉比率を容易な制御構成によって求めることができることとなって、構成の簡素化を図ることができることになる。
【００１７】
【発明の実施の形態】
本発明にかかる熱媒供給式の暖房設備を図面に基づいて説明する。
〔第１実施形態〕
この熱媒供給式の暖房設備は、床暖房装置などの暖房端末２、その暖房端末２に加熱した熱媒を熱媒循環路１を通して供給する熱源手段としての熱源機３、熱媒循環路１を開閉する開閉手段としての熱動弁４、熱源機３の運転および熱動弁４の開閉作動を制御する制御手段としての制御部５、その制御部５と通信自在なリモコン６などを備えて構成されている。
そして、暖房端末２およびリモコン６は、リビングや和室などの暖房対象空間Ｋに対応して配設され、リモコン６には、暖房対象空間Ｋ内の室温を検出する室温センサ１７が内蔵されている。
【００１８】
前記熱源機３は、暖房端末２に供給する熱媒の熱媒供給温度を切換自在に構成され、熱媒循環路１の往き側流路１ａおよび戻り側流路１ｂの夫々に接続された熱源機内流路１８の途中に、熱源機内流路１８における熱媒を貯留するシスターン７、暖房端末２に熱媒を循環供給させるための循環ポンプ８、熱源機内流路１８を通流する熱媒をバーナ９の燃焼により加熱させる熱交換器１０などを設けて、バーナ９に燃焼用空気を供給するファン１１などを備えて構成されている。
そして、バーナ９に燃料ガスを供給する燃料供給路１２には、燃料ガスの供給を断続する燃料ガス開閉弁１３、燃料ガス供給量を調整する燃料ガス調整弁１４が設けられ、バーナ９に点火するイグナイタ１５およびバーナ９の着火を確認するフレームロッド１６なども設けられている。
【００１９】
前記熱源機内流路１８におけるシスターン７よりも熱媒循環方向の上流側には、その熱媒の温度を検出する戻りサーミスタ１９が設けられ、熱源機内流路１８における熱交換器１０よりも熱媒循環方向の下流側には、その熱媒の温度を検出する往きサーミスタ２０が設けられ、熱媒循環路１の往き側流路１ａには、熱動弁４が設けられている。
そして、熱源機３の運転中において、熱動弁４を開閉することにより、暖房端末２への熱媒の供給を断続するように構成されている。
【００２０】
前記制御部５とリモコン６とは、熱源機３の運転開始や運転停止などの指令情報や、リモコン６にて設定される目標設定温度および室温センサ１７による室温などの温度情報を通信自在に構成されている。
ちなみに、目標設定温度は、例えば、１６℃〜２８℃の間で２℃刻みに７段階に設定可能に構成されている。
そして、制御部５は、リモコン６から各種の制御情報を得るとともに、暖房端末２に供給する熱媒の熱媒供給温度を切り換える熱媒供給温度切換用ディップスイッチ２１から熱媒供給温度情報を得るように構成されている。
【００２１】
前記制御部５は、リモコン６から熱源機３の運転開始が指令されると、熱源機３の運転を開始させ、リモコン６から熱源機３の運転停止が指令されると、熱源機３の運転を停止させるように構成されている。
そして、制御部５は、熱源機３の運転を開始させてから設定時間（例えば、１時間）経過するまでは、熱源機３から暖房端末２に供給する熱媒の熱媒供給温度がホットダッシュ用熱媒供給温度になるように熱源機３の運転を制御するホットダッシュ運転を行い、そのホットダッシュ運転を行ったのち、熱源機３から暖房端末２に供給する熱媒の熱媒供給温度が熱媒供給温度切換用ディップスイッチ２１にて切り換えられた熱媒供給温度になるように、熱源機３の運転を制御する通常運転を行うように構成されている。
【００２２】
前記熱源機３の運転開始および運転停止における制御部５の制御動作について説明を加える。
前記制御部５は、リモコン６から熱源機３の運転開始を指令する制御情報を受信すると、ファン１１を作動させて、燃料ガス開閉弁１３および燃料ガス調整弁１４を開弁させてバーナ９の燃焼を開始するとともに、循環ポンプ８を作動させて、熱源機３の運転を開始するようにしている。
また、制御部５は、リモコン６から熱源機３の運転停止を指令する制御情報を受信すると、燃料ガス開閉弁１３および燃料ガス調整弁１４を閉弁させてバーナ９の燃焼を停止したのち、ファン１１の作動を停止させるとともに、循環ポンプ８の作動を停止させて、熱源機３の運転を停止するようにしている。
【００２３】
前記ホットダッシュ運転における制御部５の制御動作について説明を加える。前記制御部５は、戻りサーミスタ１９および往きサーミスタ２０の検出情報に基づいて、往きサーミスタ２０の検出温度がホットダッシュ用熱媒供給温度（例えば、８０℃）になるように、燃料ガス調整弁１４の開度およびファン１１の回転速度を調整するとともに、熱動弁４を開状態に維持するように構成されている。
【００２４】
前記通常運転における制御部５の制御動作について説明を加える。
前記熱源機３から暖房端末２に供給する熱媒の熱媒供給温度が、熱媒供給温度切換用ディップスイッチ２１により、例えば、５０℃〜７０℃の間で５℃刻みに６段階に切換自在に構成されている。
そして、制御部５は、戻りサーミスタ１９および往きサーミスタ２０の検出情報に基づいて、往きサーミスタ２０の検出温度が熱媒供給温度切換用ディップスイッチ２１にて切り換えられた熱媒供給温度になるように、燃料ガス調整弁１４の開度およびファン１１の回転速度を調整するとともに、暖房対象空間内の温度としての室温センサ１７による室温とリモコン６による目標設定温度との温度差に応じて、熱動弁４を開状態に維持する開時間と熱動弁４を閉状態に維持する閉時間との目標開閉比率を求めて、単一周期における開閉比率が求めた目標開閉比率になるように調整する形態で、熱動弁４の開閉作動を周期的に繰り返し行う開閉制御処理を実行するように構成されている。
【００２５】
前記開閉制御処理について説明を加えると、制御部５は、単一周期を２０分として、その単一周期が経過するごとに、次の単一周期において開時間が何分で閉時間が何分であるかの目標開閉比率を求める目標開閉比率演算処理を実行して、次の単一周期における開閉比率が求めた目標開閉比率になるように、熱動弁４の開閉作動を周期的に繰り返し行うようにしている。
例えば、目標開閉比率演算処理にて求めた目標開閉比率が、開時間が１４分で閉時間が６分であると、まず、熱動弁４を開状態に１４分間維持したのち、熱動弁４を閉状態に６分間維持する。
【００２６】
前記目標開閉比率演算処理について説明を加えると、制御部５は、基準用の熱媒供給温度について、室温センサ１７による室温とリモコン６による目標設定温度との温度差に応じて定めた基準用開閉比率を、熱媒供給温度に応じて定めた補正用情報に基づいて調整して、前記温度差が同じであるときの前記目標開閉比率が、前記熱媒供給温度に応じて異なる値となるように、目標開閉比率を求めるように構成されている。
【００２７】
説明を加えると、制御部５には、図２に示すように、基準用の熱媒供給温度Ｔ４である６０℃において、リモコン６による目標設定温度Ｔ１から室温センサ１７による室温Ｔ２を引いた温度差ΔＴの設定範囲ごとに開時間と閉時間との開閉比率が定められている基準テーブルが基準用開閉比率として記憶されている。
そして、制御部５は、熱媒供給温度切換用ディップスイッチ２１により切り換えられた熱媒供給温度Ｔ３に応じて、下記〔数１〕から補正用情報としての補正係数αを求め、温度差ΔＴと開閉比率との対応関係の一部で温度差ΔＴが同じであるときの開閉比率が熱媒供給温度に応じて異なる値となるように、温度差ΔＴと開閉比率との対応関係を補正係数αだけステップがずれるようにして、熱媒供給温度切換用ディップスイッチ２１により切り換えられた熱媒供給温度Ｔ３に対応する調整テーブルを作り、その作成された調整テーブルにおいて、温度差ΔＴに応じて目標開閉比率を求めるようにしている。
【００２８】
【数１】
α＝（Ｔ３−Ｔ４）／５
【００２９】
ただし、上記〔数１〕において、Ｔ３は、熱媒供給温度切換用ディップスイッチ２１により切り換えられた熱媒供給温度であり、Ｔ４は、基準用の熱媒供給温度の６０℃である。
【００３０】
熱媒供給温度切換用ディップスイッチ２１により切り換えられた熱媒供給温度の具体例を挙げて、目標開閉比率の求める構成について説明する。
例えば、熱媒供給温度切換用ディップスイッチ２１により切り換えられた熱媒供給温度が５０℃であるときには、上記〔数１〕により補正係数αが−２となるので、図２における基準テーブルにおける温度差ΔＴと開閉比率との対応関係を、温度差ΔＴに対して開閉比率が２ステップだけ下にずれるようにして、図２における基準テーブルを図３に示す調整テーブルに調整して、熱媒供給温度切換用ディップスイッチ２１により切り換えられた熱媒供給温度Ｔ３に対応するテーブルを作る。
そして、図３に示す調整テーブルにおいて、リモコン６による目標設定温度Ｔ１から室温センサ１７による室温Ｔ２を引いた温度差ΔＴに応じて、目標開閉比率を求め、例えば、温度差ΔＴが０．２〜０．０では、開時間が１４分で閉時間が６分の目標開閉比率と求める。
【００３１】
また、熱媒供給温度切換用ディップスイッチ２１により切り換えられた熱媒供給温度が７０℃であるときには、上記〔数１〕により補正係数αが２となるので、図２における基準テーブルにおける温度差ΔＴと開閉比率との対応関係を、温度差ΔＴに対して開閉比率が２ステップだけ上にずれるようにして、図２における基準テーブルを図４に示す調整テーブルに調整して、熱媒供給温度切換用ディップスイッチ２１により切り換えられた熱媒供給温度Ｔ３に対応するテーブルを作る。
そして、図４に示す調整テーブルにおいて、リモコン６による目標設定温度Ｔ１から室温センサ１７による室温Ｔ２を引いた温度差ΔＴに応じて、目標開閉比率を求め、例えば、温度差ΔＴが０．２〜０．０では、開時間が６分で閉時間が１４分の目標開閉比率と求める。
【００３２】
ちなみに、熱媒供給温度切換用ディップスイッチ２１により切り換えられた熱媒供給温度が６０℃のときには、上記〔数１〕により補正係数αが０となるので、図２における基準テーブルにおける温度差ΔＴと開閉比率との対応関係をそのまま利用して、図２に示すテーブルにおいて、リモコン６による目標設定温度Ｔ１から室温センサ１７による室温Ｔ２を引いた温度差ΔＴに応じて、目標開閉比率を求める。
【００３３】
このようにして、使用者の暖房使用形態や暖房端末の敷設状態に応じて熱媒供給温度を高低に切り換えながら、その切り換えられる熱媒供給温度に対応する状態で目標開閉比率を求めて、実際に供給される熱媒供給温度と目標開閉比率を求めるときの基準となる熱媒供給温度とを対応させて、暖房対象空間内の温度を目標温度に的確に暖房するようにしている。
【００３４】
また、制御部５は、上述の通常運転において、リモコン６による目標設定温度Ｔ１から室温センサ１７による室温Ｔ２を引いた温度差ΔＴが補正用設定範囲（例えば、−０．５〜０．５）外の状態が補正用設定時間（例えば、３時間）継続すると、温度差ΔＴが補正用設定範囲内になるように補正する状態で目標開閉比率を求めるように構成されている。
【００３５】
説明を加えると、制御部５は、温度差ΔＴが補正用設定範囲よりも小さい状態が補正用設定時間継続すると、閉時間に対して開時間が長くなるように補正し、逆に、温度差ΔＴが補正用設定範囲よりも大きい状態が補正用設定時間継続すると、開時間に対して閉時間が長くなるように補正するように構成されている。
具体的には、温度差ΔＴ＜−０．５の状態が３時間継続すると、上記〔数１〕により求める補正係数αをα−１と補正し、逆に、温度差ΔＴ＞０．５の状態が３時間継続すると、上述の目標開閉比率演算処理において上記〔数１〕により求める補正係数αをα＋１と補正して、補正係数αを補正するようにしている。
【００３６】
ちなみに、上述のような補正係数αの補正については、熱源機３の運転が停止されても、その補正内容を記憶するなどして、補正係数αを補正した状態を維持し、次回、熱源機３の運転が開始された当初から補正係数αを補正した状態で、目標開閉比率を求めるようにしてもよい。
【００３７】
前記ホットダッシュ運転および通常運転における制御部５の制御動作について、図５のフローチャートに基づいて説明を加える。
まず、リモコン６から熱源機３の運転開始が指令されると、熱源機３の運転を開始させ、熱源機３の運転を開始させてから設定時間（例えば、１時間）経過するまで、熱源機３から暖房端末２に供給する熱媒の熱媒供給温度がホットダッシュ用熱媒供給温度になるように熱源機３の運転を制御するホットダッシュ運転を行う（ステップ１，２）。
【００３８】
そして、熱源機３の運転を開始させてから設定時間（例えば、１時間）経過すると、通常運転を行い、まず、目標開閉比率演算処理を実行して、熱媒供給温度切換用ディップスイッチ２１により切り換えられた熱媒供給温度Ｔ３に対応する状態で、目標開閉比率を求める（ステップ３）。
【００３９】
前記目標開閉比率演算処理にて求めた目標開閉比率が、例えば、開時間が１４分で閉時間が６分であると、まず、熱動弁４を開状態に１４分間維持したのち、熱動弁４を閉状態に６分間維持して、単一周期における開閉比率が目標開閉比率演算処理にて求めた目標開閉比率になるように、熱動弁４の開閉作動を行う（ステップ４）。
【００４０】
そして、リモコン６による目標設定温度Ｔ１から室温センサ１７による室温Ｔ２を引いた温度差ΔＴが補正用設定範囲（例えば、−０．５〜０．５）外の状態が補正用設定時間（例えば、３時間）継続しているか否かを判別し、補正係数を補正する必要があるか否かを判別する（ステップ５）。
前記温度差ΔＴが補正用設定範囲外の状態が補正用設定時間継続して、補正係数を補正する必要がある場合には、温度差ΔＴ＜−０．５の状態が３時間継続しているときに、補正係数αをα−１と補正し、温度差ΔＴ＞０．５の状態が３時間継続しているときに、補正係数αをα＋１と補正して、補正係数αを補正する（ステップ６）。
【００４１】
上述のように、補正係数αを補正した場合に限らず、補正係数αを補正していない場合でも、再度、目標開閉比率演算処理を実行して、単一周期における開閉比率が目標開閉比率演算処理にて求めた目標開閉比率になるように、熱動弁４の開閉作動を行う動作を周期的に繰り返し行う。
【００４２】
そして、ホットダッシュ運転中や通常運転中に、リモコン６から熱源機３の運転停止が指令されると、強制的に熱源機３の運転を停止させて、その運転中のホットダッシュ運転や通常運転を終了させる。
【００４３】
〔第２実施形態〕
この第２実施形態は、上記第１実施形態における目標開閉比率演算処理についての別実施形態を示すものであり、以下、この第２実施形態での目標開閉比率演算処理についての構成について説明する。
ちなみに、その他の構成については、上記第１実施形態と同様であるので、動符号を記すなどにより、その詳細な説明は省略する。
【００４４】
すなわち、制御部５は、開閉制御処理において、室温センサ１７による室温とリモコン６による目標設定温度との温度差が同じであるときの開閉比率が熱媒供給温度に応じて異なる値となるように定められた複数種の熱媒供給温度対応開閉比率のうち、熱媒供給温度に対応する熱媒供給温度対応開閉比率を選択して、目標開閉比率を求めるように構成されている。
【００４５】
説明を加えると、熱媒供給温度が６段階に切換自在であるので、図２〜図４に示すように、６段階に切換自在な熱媒供給温度の夫々について、リモコン６による目標設定温度Ｔ１から室温センサ１７による室温Ｔ２を引いた温度差ΔＴの設定範囲ごとに開時間と閉時間との開閉比率が定められている複数種のテーブルが設けられ、それらの複数種のテーブルが制御部５に記憶されている。
ちなみに、図２に示すテーブルは、熱媒供給温度が６０℃に対応するものであり、図３に示すテーブルは、熱媒供給温度が５０℃に対応するものであり、図４に示すテーブルは、熱媒供給温度が７０℃に対応するものである。
【００４６】
そして、制御部５は、記憶されている複数種のテーブルのうちから、熱媒供給温度切換用ディップスイッチ２１により切り換えられた熱媒供給温度に対応するテーブルを選択し、その選択されたテーブルにおいて、温度差ΔＴに応じて目標開閉比率を求めるようにしている。
例えば、熱媒供給温度切換用ディップスイッチ２１により切り換えられた熱媒供給温度が６０℃であると、図２のテーブルを選択し、温度差ΔＴが０．２〜０．０であると、開時間が１０分で閉時間が１０分と目標開閉比率を求める。
【００４７】
〔別実施形態〕
（１）上記第１および第２実施形態では、温度差ΔＴの設定範囲ごとに開閉比率が定められているテーブルを用いて、目標開閉比率を求めるようにしているが、例えば、温度差ΔＴごとに開閉比率が定められている線形の比例関係や非線形の相関関係などを用いて、目標開閉比率を求めることも可能であり、温度差ΔＴに応じて目標開閉比率を求めるものであればよい。
【００４８】
（２）上記第１および第２実施形態では、ホットダッシュ運転を行う熱源機３を例示したが、ホットダッシュ運転を行わない熱源機３にて実施することも可能である。
また、熱源機３は、バーナ９の燃焼により加熱した熱媒を暖房端末２に供給するものに限らず、例えば、電気ヒータにより加熱した熱媒を暖房端末に供給するものなど、その他各種の熱源機が適応可能である。
【００４９】
（３）上記第１および第２実施形態では、暖房端末２をひとつ備え、熱動弁４もひとつ設けるものを例示したが、暖房端末２を複数備えて、それら複数の暖房端末２の夫々に対応して熱動弁４を設けるものでもよく、暖房端末２の数については適宜変更が可能である。
ちなみに、暖房端末２を複数備えるものでは、暖房対象空間内の温度と目標設定温度との温度差が同じであるときの目標開閉比率が、熱媒供給温度に応じて異なる値となるように、目標開閉比率を求める対象の熱動弁を、すべての熱動弁としたり、あるいは、一部の熱動弁として実施することが可能である。
【００５０】
（４）上記第１および第２実施形態では、本発明にかかる熱媒供給式の暖房設備を、熱源機３からひとつの暖房端末２に対して熱媒を供給する熱源機３を備えた熱媒供給式の暖房設備に適応した例を示したが、例えば、低温用の暖房端末に低温熱媒を供給するとともに、高温用の暖房端末に高温熱媒を供給する２温度式の熱源機を備えた熱媒供給式の暖房設備など、その他各種の熱媒供給式の暖房設備に適応することが可能である。
【図面の簡単な説明】
【図１】熱媒供給システムの全体概略図
【図２】温度差の設定範囲ごとの開閉比率を定めた基準テーブル
【図３】基準テーブルを熱媒供給温度に応じて調整した調整テーブル
【図４】基準テーブルを熱媒供給温度に応じて調整した調整テーブル
【図５】制御部の制御動作を示すフローチャート
【符号の説明】
１熱媒循環路
２暖房端末
３熱源手段
４開閉手段
５制御手段[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention provides a heat source means for supplying a heated heat medium to a heating terminal through a heat medium circulation path, an opening / closing means for opening and closing the heat medium circulation path to intermittently supply a heat medium, an operation of the heat source means and Control means for controlling the opening and closing operation of the opening and closing means is provided,
The control unit is configured to perform target opening and closing of an opening time for maintaining the opening / closing unit in an open state and a closing time for maintaining the opening / closing unit in a closed state according to a temperature difference between a temperature in the space to be heated and a target set temperature. An opening / closing control process for periodically repeating the opening / closing operation of the opening / closing means is performed in such a manner that a ratio is obtained and the opening / closing ratio in a single cycle is adjusted to be the obtained target opening / closing ratio. The present invention relates to a heating device that supplies a heat medium.
[0002]
[Prior art]
In the heating equipment of the heating medium supply type as described above, the control means obtains the target opening / closing ratio according to the temperature difference between the room temperature or the floor temperature in the space to be heated and the target set temperature, and the opening / closing ratio in a single cycle. By performing an opening / closing control process of periodically repeating the opening / closing operation of the opening / closing means in the form of adjusting the target opening / closing ratio to the determined target opening / closing ratio, the room temperature or the floor temperature in the space to be heated becomes the target set temperature. Thus, the space to be heated is heated.
[0003]
Conventionally, for example, a heating medium having a constant heating medium supply temperature such as 60 ° C. is supplied from the heat source means to the heating terminal, for example, with a single cycle of 20 minutes, in a state corresponding to the constant heating medium supply temperature, The opening / closing ratio between the opening time and the closing time is predetermined so that the temperature difference between the temperature in the space to be heated and the target set temperature is small, and the control means performs a constant heating medium supply in the opening / closing control processing. It is configured such that a target opening / closing ratio is obtained from a predetermined opening / closing ratio corresponding to a temperature in accordance with a temperature difference between a temperature in the space to be heated and a target set temperature (for example, see Patent Document 1). .
[0004]
[Patent Document 1]
JP 2000-121078 A
[0005]
[Problems to be solved by the invention]
In the above-mentioned conventional heating medium supply type heating equipment, a heating medium having a constant heating medium supply temperature such as 60 ° C. is supplied from the heat source means to the heating terminal. In addition, it is required to switch the heating medium supply temperature of the heating medium supplied from the heat source means to the heating terminal between high and low.
That is, by lowering the heating medium supply temperature of the heating medium supplied from the heat source means to the heating terminal, for example, when the floor heating device is used constantly or when the floor heating device is laid all over the room, the heat source Since the amount of heating by the means can be reduced to save energy, it is required to lower the heating medium supply temperature.
Also, by increasing the heat medium supply temperature of the heat medium supplied to the heating terminal from the heat source means, for example, when using the floor heating device intermittently or when partially laying the floor heating device, Since the heating target space can be heated in a short time from the start of the heating, it is required to increase the heating medium supply temperature.
[0006]
And in order to respond to the above-mentioned demand, the heat source means is configured so that the heat medium supply temperature of the heat medium to be supplied to the heating terminal can be switched, and the heat medium supply temperature can be changed according to the heating usage mode and the laying state of the heating terminal. It has been considered to supply a heating medium from a heat source means to a heating terminal. However, in the above-described conventional heating medium supply type heating equipment, for example, from the opening / closing ratio predetermined in correspondence with a constant heating medium supply temperature such as 60 ° C., the temperature in the space to be heated and the target set temperature are determined. Since the target opening / closing ratio is determined according to the temperature difference, the heating medium supply temperature that is actually supplied is different from the heating medium supply temperature that is the reference when the target opening / closing ratio is determined, and the temperature in the heating target space is different. May not be heated to the target set temperature.
[0007]
In addition, when the heating medium supply temperature is switched below 60 ° C., the target opening / closing when the heating medium supply temperature is 60 ° C. even though the heating medium supply temperature is below 60 ° C. Since the ratio is obtained, the heat medium supply temperature actually supplied becomes lower than the heat medium supply temperature which is a reference when obtaining the target opening / closing ratio, and the temperature in the space to be heated is lower than the target set temperature. It will be heated to a low state.
Conversely, when the heat medium supply temperature is switched to a value higher than 60 ° C., the target opening / closing ratio when the heat medium supply temperature is 60 ° C. is notwithstanding the heat medium supply temperature being higher than 60 ° C. Since the heat medium supply temperature actually supplied is higher than the heat medium supply temperature that is the reference when calculating the target opening / closing ratio, the temperature in the space to be heated is higher than the target set temperature. Will be heated.
[0008]
The present invention has been made in view of such a point, and an object of the present invention is to provide a heating device that responds to a user's desire to raise or lower a heating medium supply temperature according to a heating usage mode or a laying state of a heating terminal. It is an object of the present invention to provide a heating medium supply type heating facility capable of accurately heating a temperature in a target space to a target temperature.
[0009]
[Means for Solving the Problems]
In order to achieve this object, according to the invention as set forth in claim 1, a heat source means for supplying a heated heat medium to a heating terminal through a heat medium circulation path, and a heat medium for opening and closing the heat medium circulation path Opening / closing means for intermittent supply and control means for controlling the operation of the heat source means and the opening / closing operation of the opening / closing means are provided,
The control unit is configured to perform target opening and closing of an opening time for maintaining the opening / closing unit in an open state and a closing time for maintaining the opening / closing unit in a closed state according to a temperature difference between a temperature in the space to be heated and a target set temperature. An opening / closing control process for periodically repeating the opening / closing operation of the opening / closing means is performed in such a manner that a ratio is obtained and the opening / closing ratio in a single cycle is adjusted to be the obtained target opening / closing ratio. In the heating medium supply type heating equipment, the heat source means is configured to be capable of switching a heating medium supply temperature of a heating medium to be supplied to the heating terminal, and the control means has the same temperature difference in the opening / closing control processing. The target opening / closing ratio is determined so that the target opening / closing ratio at the time of is different depending on the heat medium supply temperature.
[0010]
That is, since the heat source means is configured to be able to switch the heat medium supply temperature of the heat medium supplied to the heating terminal, the heat medium supply temperature can be raised or lowered according to the user's heating usage mode or the laying state of the heating terminal. Can be switched.
In the opening / closing control process, the control unit has a target opening / closing ratio when the temperature difference between the temperature in the space to be heated and the target set temperature is the same, and the target opening / closing ratio has a different value depending on the heat medium supply temperature switched between high and low. As described above, since the target opening / closing ratio is obtained, in the opening / closing control processing, for example, the heating medium supply temperature that is switched between high and low so that the opening time is longer than the closing time as the heating medium supply temperature is lower. Can be obtained.
[0011]
Then, by switching the heating medium supply temperature to high or low according to the heating usage mode of the user or the laying state of the heating terminal, the control unit can control the target corresponding to the heating medium supply temperature switched to high or low as described above. By obtaining the opening / closing ratio, it is possible to make the heating medium supply temperature actually supplied correspond to the heating medium supply temperature which is a reference when obtaining the target opening / closing ratio.
Therefore, the control unit can execute the opening / closing control process in a state corresponding to the heat medium supply temperature that can be switched between high and low, and can supply the heat medium according to the heating usage mode of the user or the laying state of the heating terminal. Even if the temperature is switched between high and low, the temperature in the space to be heated can be accurately heated to the target temperature.
[0012]
From the above, it is possible to execute the opening / closing control process in a state corresponding to the heat medium supply temperature at which the heat medium supply temperature is switched between high and low while switching the heat medium supply temperature between high and low according to the heating usage mode of the user and the laying state of the heating terminal. Thus, it is possible to provide a heating medium-supply type heating equipment capable of accurately heating the temperature in the space to be heated to the target temperature.
[0013]
According to the invention as set forth in claim 2, the control means, in the opening / closing control processing, sets a reference opening / closing ratio determined in accordance with the temperature difference with respect to the reference heating medium supply temperature, to the heating medium supply temperature. The target opening / closing ratio is obtained by adjusting the target opening / closing ratio based on the correction information determined in accordance with the above.
[0014]
That is, in the opening / closing control process, the control unit adjusts the determined reference opening / closing ratio based on the correction information determined in accordance with the heat medium supply temperature to obtain the target opening / closing ratio. By handling only the open / close ratio, the target open / close ratio for the heat medium supply temperature that can be switched between high and low can be obtained.
Therefore, the control means can obtain the target opening / closing ratio only by handling the information of the reference opening / closing ratio and the correction information. Therefore, the control means handles the target opening / closing ratio for the heat medium supply temperature that can be switched between high and low. The amount of information can be reduced, and the configuration can be simplified.
[0015]
According to the invention described in claim 3, the control means determines in the opening / closing control processing such that the opening / closing ratio when the temperature difference is the same has a different value depending on the heat medium supply temperature. The target opening / closing ratio is determined by selecting a heating medium supply temperature corresponding opening / closing ratio corresponding to the heating medium supply temperature from among a plurality of types of heating medium supply temperature corresponding opening / closing ratios.
[0016]
That is, the control unit selects the heating medium supply temperature corresponding opening / closing ratio corresponding to the heating medium supply temperature from the determined plurality of types of heating medium supply temperature corresponding opening / closing ratios in the opening / closing control processing, and sets the target opening / closing ratio. Therefore, the control means can easily select a heating medium supply temperature corresponding opening / closing ratio from a plurality of types of heating medium supply temperature corresponding opening / closing ratios. The target opening / closing ratio can be obtained.
Therefore, the target opening / closing ratio can be obtained with a simple control configuration, and the configuration can be simplified.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
A heating medium supply type heating facility according to the present invention will be described with reference to the drawings.
[First Embodiment]
The heating equipment of the heating medium supply type includes a heating terminal 2 such as a floor heating device, a heat source device 3 as a heat source means for supplying a heating medium heated to the heating terminal 2 through a heating medium circulation path 1, and a heating medium circulation path 1. Valve 4 as opening and closing means for opening and closing the heat source, a control unit 5 as control means for controlling the operation of the heat source unit 3 and the opening and closing operation of the heat operating valve 4, a remote controller 6 which can communicate with the control unit 5 and the like. It is configured.
The heating terminal 2 and the remote controller 6 are arranged corresponding to a heating target space K such as a living room or a Japanese-style room. The remote controller 6 has a built-in room temperature sensor 17 for detecting a room temperature in the heating target space K. .
[0018]
The heat source unit 3 is configured such that the heat medium supply temperature of the heat medium supplied to the heating terminal 2 can be switched, and the heat sources connected to the outgoing side flow path 1a and the return side flow path 1b of the heat medium circulating path 1 respectively. A cistern 7 for storing the heat medium in the heat source internal flow path 18, a circulation pump 8 for circulating and supplying the heat medium to the heating terminal 2, and a heat medium flowing through the heat source internal flow path 18, in the middle of the internal flow path 18. The apparatus is provided with a heat exchanger 10 for heating by burning the burner 9 and a fan 11 for supplying combustion air to the burner 9.
A fuel gas supply passage 12 for supplying the fuel gas to the burner 9 is provided with a fuel gas opening / closing valve 13 for intermittently supplying the fuel gas and a fuel gas regulating valve 14 for adjusting the fuel gas supply amount. Also provided are an igniter 15 and a frame rod 16 for checking the ignition of the burner 9.
[0019]
A return thermistor 19 for detecting the temperature of the heat medium is provided upstream of the cistern 7 in the heat source unit flow path 18 in the heat medium circulating direction, and is provided with a heat medium that is smaller than the heat exchanger 10 in the heat source unit flow path 18. On the downstream side in the circulation direction, an outgoing thermistor 20 for detecting the temperature of the heat medium is provided, and in the outgoing side flow path 1a of the heat medium circulating path 1, a thermal valve 4 is provided.
During the operation of the heat source unit 3, the supply of the heat medium to the heating terminal 2 is interrupted by opening and closing the heat valve 4.
[0020]
The control unit 5 and the remote controller 6 are configured to freely communicate command information such as start and stop of operation of the heat source unit 3 and temperature information such as a target set temperature set by the remote controller 6 and a room temperature by the room temperature sensor 17. Have been.
Incidentally, the target set temperature can be set in, for example, seven steps between 16 ° C. and 28 ° C. in steps of 2 ° C.
The control unit 5 obtains various control information from the remote controller 6 and obtains heat medium supply temperature information from the heat medium supply temperature switching dip switch 21 that switches the heat medium supply temperature of the heat medium supplied to the heating terminal 2. It is configured as follows.
[0021]
The control unit 5 starts the operation of the heat source unit 3 when the operation start of the heat source unit 3 is instructed from the remote controller 6, and operates the heat source unit 3 when the stop of the heat source unit 3 is instructed by the remote control 6. Is configured to be stopped.
Then, the control unit 5 sets the heat medium supply temperature of the heat medium supplied from the heat source unit 3 to the heating terminal 2 to a hot dash until a set time (for example, one hour) elapses after the operation of the heat source unit 3 is started. Hot dash operation for controlling the operation of the heat source unit 3 so that the heating medium supply temperature is attained, and after performing the hot dash operation, the heat medium supply temperature of the heat medium supplied from the heat source unit 3 to the heating terminal 2 The normal operation for controlling the operation of the heat source device 3 is performed so that the heat medium supply temperature is switched by the heat medium supply temperature switching DIP switch 21.
[0022]
The control operation of the control unit 5 when starting and stopping the operation of the heat source unit 3 will be described.
When receiving the control information for instructing the start of the operation of the heat source unit 3 from the remote controller 6, the control unit 5 operates the fan 11, opens the fuel gas on-off valve 13 and the fuel gas adjustment valve 14, and operates the burner 9. While starting the combustion, the circulation pump 8 is operated to start the operation of the heat source unit 3.
Further, when receiving the control information instructing the stop of the operation of the heat source device 3 from the remote controller 6, the control unit 5 closes the fuel gas on-off valve 13 and the fuel gas adjustment valve 14 to stop the combustion of the burner 9. The operation of the heat source unit 3 is stopped by stopping the operation of the fan 11 and stopping the operation of the circulation pump 8.
[0023]
The control operation of the control unit 5 in the hot dash operation will be described. The control unit 5 controls the fuel gas regulating valve 14 based on the detection information of the return thermistor 19 and the outgoing thermistor 20 such that the detected temperature of the outgoing thermistor 20 becomes the hot dash heating medium supply temperature (for example, 80 ° C.). And the rotational speed of the fan 11 are adjusted, and the thermal valve 4 is maintained in an open state.
[0024]
The control operation of the control unit 5 in the normal operation will be described.
The heat medium supply temperature of the heat medium to be supplied from the heat source unit 3 to the heating terminal 2 can be switched between, for example, 50 ° C. to 70 ° C. in six steps in steps of 5 ° C. by the heat medium supply temperature switching dip switch 21. Is configured.
Then, based on the detection information of the return thermistor 19 and the outgoing thermistor 20, the control unit 5 sets the detected temperature of the outgoing thermistor 20 to the heat medium supply temperature switched by the heat medium supply temperature switching DIP switch 21. In addition to adjusting the opening degree of the fuel gas regulating valve 14 and the rotation speed of the fan 11, the thermal operation is performed in accordance with the temperature difference between the room temperature by the room temperature sensor 17 as the temperature in the space to be heated and the target set temperature by the remote controller 6. A target opening / closing ratio between the opening time for maintaining the valve 4 in the open state and the closing time for maintaining the thermal valve 4 in the closed state is determined, and the opening / closing ratio in a single cycle is adjusted to be the determined target opening / closing ratio. The embodiment is configured to execute an opening / closing control process of periodically repeating the opening / closing operation of the thermal valve 4.
[0025]
In addition to the opening / closing control processing, the control unit 5 sets a single cycle to 20 minutes, and every time the single cycle elapses, the open time and the close time in the next single cycle are set to several minutes. Is performed, and the opening and closing operation of the thermal valve 4 is periodically repeated so that the opening and closing ratio in the next single cycle becomes the determined target opening and closing ratio. I'm trying to do it.
For example, if the target opening / closing ratio obtained by the target opening / closing ratio calculation processing is 14 minutes for the open time and 6 minutes for the close time, first, the thermal valve 4 is kept open for 14 minutes, and then the thermal valve is opened. Hold 4 closed for 6 minutes.
[0026]
In addition to the description of the target opening / closing ratio calculation process, the control unit 5 sets the reference opening / closing temperature determined based on the difference between the room temperature by the room temperature sensor 17 and the target set temperature by the remote controller 6 for the reference heating medium supply temperature. The ratio is adjusted based on the correction information determined according to the heat medium supply temperature, so that the target opening / closing ratio when the temperature difference is the same has a different value according to the heat medium supply temperature. In addition, a target opening / closing ratio is obtained.
[0027]
In addition, as shown in FIG. 2, at the control unit 5, at 60 ° C., which is the reference heat medium supply temperature T 4, the temperature obtained by subtracting the room temperature T 2 by the room temperature sensor 17 from the target set temperature T 1 by the remote controller 6. A reference table in which the open / close ratio between the open time and the close time is determined for each set range of the difference ΔT is stored as a reference open / close ratio.
Then, the control unit 5 obtains a correction coefficient α as correction information from the following [Equation 1] according to the heat medium supply temperature T3 switched by the heat medium supply temperature switching dip switch 21, and calculates the temperature difference ΔT and The correspondence between the temperature difference ΔT and the opening / closing ratio is corrected by a correction coefficient α so that the opening / closing ratio when the temperature difference ΔT is the same in part of the correspondence between the opening / closing ratio and the opening / closing ratio is different depending on the heat medium supply temperature. An adjustment table corresponding to the heat medium supply temperature T3 switched by the heat medium supply temperature changeover dip switch 21 is created in such a manner that the steps are shifted only by the steps, and in the created adjustment table, the target opening and closing is performed according to the temperature difference ΔT. I try to find the ratio.
[0028]
(Equation 1)
α = (T3-T4) / 5
[0029]
However, in the above [Equation 1], T3 is a heating medium supply temperature switched by the heating medium supply temperature switching dip switch 21, and T4 is a reference heating medium supply temperature of 60 ° C.
[0030]
The configuration for obtaining the target opening / closing ratio will be described with a specific example of the heat medium supply temperature switched by the heat medium supply temperature switching dip switch 21.
For example, when the heating medium supply temperature switched by the heating medium supply temperature switching dip switch 21 is 50 ° C., the correction coefficient α becomes −2 according to the above [Equation 1], and thus the temperature difference in the reference table in FIG. The reference table in FIG. 2 is adjusted to the adjustment table shown in FIG. 3 by changing the correspondence between ΔT and the opening / closing ratio so that the opening / closing ratio is shifted downward by two steps with respect to the temperature difference ΔT. A table corresponding to the heat medium supply temperature T3 switched by the switching dip switch 21 is created.
Then, in the adjustment table shown in FIG. 3, the target opening / closing ratio is determined according to the temperature difference ΔT obtained by subtracting the room temperature T2 from the room temperature sensor 17 from the target set temperature T1 by the remote controller 6, and for example, the temperature difference ΔT is 0.2 to 0.2. At 0.0, the target opening / closing ratio is determined to be 14 minutes for the open time and 6 minutes for the close time.
[0031]
Further, when the heating medium supply temperature switched by the heating medium supply temperature switching dip switch 21 is 70 ° C., the correction coefficient α is 2 by the above [Equation 1], and thus the temperature difference ΔT in the reference table in FIG. The reference table in FIG. 2 is adjusted to the adjustment table shown in FIG. 4 so that the opening / closing ratio is shifted upward by two steps with respect to the temperature difference ΔT. A table corresponding to the heating medium supply temperature T3 switched by the dip switch 21 is created.
Then, in the adjustment table shown in FIG. 4, a target opening / closing ratio is obtained according to a temperature difference ΔT obtained by subtracting a room temperature T2 from the room temperature sensor 17 from a target set temperature T1 by the remote controller 6; At 0.0, the target opening / closing ratio is obtained as the opening time is 6 minutes and the closing time is 14 minutes.
[0032]
Incidentally, when the heating medium supply temperature switched by the heating medium supply temperature switching DIP switch 21 is 60 ° C., the correction coefficient α becomes 0 according to the above [Equation 1], so that the temperature difference ΔT in the reference table in FIG. Using the correspondence relationship with the opening / closing ratio as it is, the target opening / closing ratio is obtained in the table shown in FIG. 2 according to the temperature difference ΔT obtained by subtracting the room temperature T2 by the room temperature sensor 17 from the target setting temperature T1 by the remote controller 6.
[0033]
In this way, while switching the heating medium supply temperature between high and low according to the heating usage mode of the user and the laying state of the heating terminal, the target opening / closing ratio is obtained in a state corresponding to the switched heating medium supply temperature, and The temperature in the space to be heated is accurately heated to the target temperature by associating the temperature of the heat medium supplied to the heater with the temperature of the heat medium supplied as a reference when obtaining the target opening / closing ratio.
[0034]
In the normal operation described above, the control unit 5 determines that the temperature difference ΔT obtained by subtracting the room temperature T2 from the target room temperature sensor 17 from the target set temperature T1 from the remote controller 6 is a correction setting range (for example, −0.5 to 0.5). When the outside state continues for the set time for correction (for example, 3 hours), the target opening / closing ratio is obtained in a state where the temperature difference ΔT is corrected so as to be within the set range for correction.
[0035]
In addition, when the state where the temperature difference ΔT is smaller than the correction setting range continues for the correction setting time, the control unit 5 corrects the opening time to be longer than the closing time, and conversely, the temperature difference ΔT When the state in which ΔT is larger than the correction setting range continues for the correction setting time, the correction is performed so that the closing time is longer than the opening time.
Specifically, when the state of the temperature difference ΔT <−0.5 continues for 3 hours, the correction coefficient α obtained by the above [Equation 1] is corrected to α−1, and conversely, the temperature difference ΔT> 0.5 is satisfied. When the state continues for three hours, the correction coefficient α obtained by the above [Equation 1] is corrected to α + 1 in the target opening / closing ratio calculation processing, so that the correction coefficient α is corrected.
[0036]
By the way, regarding the correction of the correction coefficient α as described above, even if the operation of the heat source unit 3 is stopped, the state of the correction coefficient α is maintained by storing the correction contents, and the heat source unit The target opening / closing ratio may be obtained in a state where the correction coefficient α has been corrected from the beginning of the operation of No. 3.
[0037]
The control operation of the control unit 5 in the hot dash operation and the normal operation will be described based on the flowchart of FIG.
First, when the operation start of the heat source unit 3 is instructed from the remote controller 6, the operation of the heat source unit 3 is started, and the heat source unit 3 is operated until the set time (for example, one hour) elapses after the operation of the heat source unit 3 is started. A hot dash operation is performed to control the operation of the heat source device 3 so that the heat medium supply temperature of the heat medium supplied to the heating terminal 2 from 3 becomes the hot dash heat medium supply temperature (steps 1 and 2).
[0038]
When a set time (for example, one hour) elapses after the operation of the heat source unit 3 is started, the normal operation is performed, first, a target opening / closing ratio calculation process is executed, and the heat medium supply temperature switching DIP switch 21 is used. A target opening / closing ratio is obtained in a state corresponding to the switched heating medium supply temperature T3 (step 3).
[0039]
If the target opening / closing ratio obtained by the target opening / closing ratio calculation processing is, for example, 14 minutes for the open time and 6 minutes for the close time, first, the thermal valve 4 is kept open for 14 minutes, The valve 4 is maintained in the closed state for 6 minutes, and the opening and closing operation of the thermal valve 4 is performed so that the opening and closing ratio in a single cycle becomes the target opening and closing ratio obtained by the target opening and closing ratio calculation processing (step 4).
[0040]
The temperature difference ΔT obtained by subtracting the room temperature T2 detected by the room temperature sensor 17 from the target set temperature T1 by the remote controller 6 is outside the correction setting range (eg, −0.5 to 0.5). (3 hours) It is determined whether or not the correction is continued, and whether or not the correction coefficient needs to be corrected is determined (step 5).
When the temperature difference ΔT is outside the correction setting range for the correction setting time and the correction coefficient needs to be corrected, the temperature difference ΔT <−0.5 is maintained for 3 hours. At this time, the correction coefficient α is corrected to α−1, and when the state of the temperature difference ΔT> 0.5 continues for 3 hours, the correction coefficient α is corrected to α + 1 to correct the correction coefficient α ( Step 6).
[0041]
As described above, not only when the correction coefficient α is corrected, but also when the correction coefficient α is not corrected, the target opening / closing ratio calculation process is executed again, and the opening / closing ratio in a single cycle is calculated. The operation of opening and closing the thermal valve 4 is periodically repeated so that the target opening / closing ratio obtained by the processing is achieved.
[0042]
When the operation stop of the heat source unit 3 is commanded from the remote controller 6 during the hot dash operation or the normal operation, the operation of the heat source unit 3 is forcibly stopped, and the hot dash operation or the normal operation during the operation is performed. To end.
[0043]
[Second embodiment]
The second embodiment shows another embodiment of the target opening / closing ratio calculation process in the first embodiment. Hereinafter, the configuration of the target opening / closing ratio calculation process in the second embodiment will be described.
Incidentally, since the other configuration is the same as that of the first embodiment, detailed description thereof will be omitted by adding a dynamic code.
[0044]
That is, in the opening / closing control processing, the control unit 5 sets the opening / closing ratio when the temperature difference between the room temperature detected by the room temperature sensor 17 and the target set temperature by the remote controller 6 to be different values according to the heat medium supply temperature. A target opening / closing ratio is determined by selecting a heating medium supply temperature corresponding opening / closing ratio corresponding to the heat medium supply temperature from among a plurality of determined heating medium supply temperature corresponding opening / closing ratios.
[0045]
In addition, since the heat medium supply temperature can be switched in six stages, as shown in FIGS. 2 to 4, the target set temperature T1 by the remote controller 6 is determined for each of the heat medium supply temperatures that can be switched in six stages. Are provided for each set range of the temperature difference ΔT, which is obtained by subtracting the room temperature T2 from the room temperature sensor 17 from the table, and the opening / closing ratio of the opening time and the closing time is determined. Is stored in
Incidentally, the table shown in FIG. 2 corresponds to a heating medium supply temperature of 60 ° C., the table shown in FIG. 3 corresponds to a heating medium supply temperature of 50 ° C., and the table shown in FIG. , And the heating medium supply temperature corresponds to 70 ° C.
[0046]
Then, the control unit 5 selects a table corresponding to the heating medium supply temperature switched by the heating medium supply temperature switching DIP switch 21 from among the plurality of types of stored tables, and in the selected table. , The target opening / closing ratio is determined according to the temperature difference ΔT.
For example, when the heating medium supply temperature switched by the heating medium supply temperature switching dip switch 21 is 60 ° C., the table in FIG. 2 is selected, and when the temperature difference ΔT is 0.2 to 0.0, the table is opened. The target opening / closing ratio is obtained with the time being 10 minutes and the closing time being 10 minutes.
[0047]
[Another embodiment]
(1) In the first and second embodiments, the target opening / closing ratio is obtained using the table in which the opening / closing ratio is determined for each set range of the temperature difference ΔT. The target opening / closing ratio can be obtained by using a linear proportional relationship or a non-linear correlation in which the opening / closing ratio is determined, and any method may be used as long as the target opening / closing ratio is obtained according to the temperature difference ΔT.
[0048]
(2) In the first and second embodiments, the heat source unit 3 that performs the hot dash operation has been described as an example. However, the heat source unit 3 that does not perform the hot dash operation may be used.
The heat source unit 3 is not limited to the one that supplies the heating medium heated by the combustion of the burner 9 to the heating terminal 2. For example, the heating unit 3 supplies the heating medium heated by an electric heater to the heating terminal 2. Machine is adaptable.
[0049]
(3) In the first and second embodiments, an example in which one heating terminal 2 is provided and one thermal valve 4 is also provided, but a plurality of heating terminals 2 are provided, and each of the plurality of heating terminals 2 is provided. A heat valve 4 may be provided correspondingly, and the number of heating terminals 2 can be changed as appropriate.
By the way, in those having a plurality of heating terminals 2, the target opening / closing ratio when the temperature difference between the temperature in the space to be heated and the target set temperature is the same is different depending on the heat medium supply temperature. The thermal valve for which the target opening / closing ratio is to be obtained may be implemented as all thermal valves or as some thermal valves.
[0050]
(4) In the first and second embodiments, the heating equipment of the heating medium supply type according to the present invention is provided with a heat source unit 3 for supplying a heating medium from the heat source unit 3 to one heating terminal 2. Although an example adapted to a medium supply type heating facility is shown, for example, a two-temperature type heat source unit that supplies a low-temperature heating medium to a low-temperature heating terminal and supplies a high-temperature heating medium to a high-temperature heating terminal is used. It is possible to apply to various other heating medium supply type heating facilities such as a provided heating medium supply type heating facility.
[Brief description of the drawings]
FIG. 1 is an overall schematic diagram of a heat medium supply system.
FIG. 2 is a reference table that defines an opening / closing ratio for each setting range of a temperature difference.
FIG. 3 is an adjustment table in which a reference table is adjusted according to a heating medium supply temperature.
FIG. 4 is an adjustment table obtained by adjusting a reference table in accordance with a heating medium supply temperature.
FIG. 5 is a flowchart showing a control operation of a control unit.
[Explanation of symbols]
1 Heat medium circulation path
2 heating terminals
3 heat source means
4 Opening / closing means
5 control means

Claims

Heat source means for supplying the heated heat medium to the heating terminal through the heat medium circulation path, opening and closing means for opening and closing the heat medium circulation path to interrupt the supply of the heat medium, operation of the heat source means and opening and closing of the opening and closing means Control means for controlling the operation is provided;
The control unit is configured to perform target opening and closing of an opening time for maintaining the opening / closing unit in an open state and a closing time for maintaining the opening / closing unit in a closed state according to a temperature difference between a temperature in the space to be heated and a target set temperature. An opening / closing control process for periodically repeating the opening / closing operation of the opening / closing means is performed in such a manner that a ratio is obtained and the opening / closing ratio in a single cycle is adjusted to be the obtained target opening / closing ratio. Heating medium supply type heating equipment, wherein the heat source means is configured to be able to switch the heating medium supply temperature of the heating medium to be supplied to the heating terminal,
The control means is configured to determine the target opening / closing ratio in the opening / closing control process such that the target opening / closing ratio when the temperature difference is the same is different according to the heat medium supply temperature. Heating equipment that is supplied with heat medium.

The control means, in the opening and closing control process, for a reference heating medium supply temperature, a reference opening and closing ratio determined according to the temperature difference, based on correction information determined according to the heating medium supply temperature. The heating medium supply type heating equipment according to claim 1, wherein the heating medium supply type heating equipment is configured to obtain the target opening / closing ratio by adjusting.

The control means, in the opening and closing control process, the opening and closing ratio when the temperature difference is the same, the opening and closing ratio corresponding to a plurality of types of heating medium supply temperature corresponding opening and closing ratios determined to be different values according to the heating medium supply temperature. 2. The heating medium supply type heating equipment according to claim 1, wherein an opening / closing ratio corresponding to the heating medium supply temperature corresponding to the heating medium supply temperature is selected, and the target opening / closing ratio is obtained. 3.